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A C210 turbocharger new check valve was installed and the engine run. The check valve was assembled incorrectly and blocked oil to the turbocharger damaging the unit.
| Attributes | |
| ACN | 661078 |
| Time | |
| Date | 200506 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Operator | general aviation : personal |
| Make Model Name | Cessna 210 Centurion / Turbo Centurion 210C 210D |
| Operating Under FAR Part | Part 91 |
| Person 1 | |
| Affiliation | other |
| Function | flight crew : single pilot other personnel other |
| Qualification | pilot : private pilot : instrument |
| Experience | flight time last 90 days : 20 flight time total : 1600 flight time type : 1400 |
| ASRS Report | 661078 |
| Person 2 | |
| Affiliation | other |
| Function | maintenance : technician |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : published procedure non adherence : far |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : work cards performance deficiency : non compliance with legal requirements performance deficiency : testing performance deficiency : inspection |
| Supplementary | |
| Problem Areas | Chart Or Publication Aircraft Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
On or about jun/wed/05 it was discovered that a valid new part; a turbocharger check valve; made by manufacturer X for manufacturer Y and ordered from manufacturer Z parts; was manufactured incorrectly. The valve was assembled 'backwards' at the manufacturer. There is no 'shop' procedure to check the valve prior to installation. On ground run-up; no oil flowed to the turbocharger; which damaged same and the turbocharger is out for overhaul. FAA notified. Aircraft was not flown. Callback conversation with reporter revealed the following information: this check valve was brand new with the required svcable tag and was installed on the turbocharger. When the engine was operated; the turbocharger seized from lack of oil flow. The check valve was found assembled incorrectly and blocked the oil from lubricating the turbocharger. The part was turned over to the local FSDO and it was established the valve was assembled incorrectly. On contacting the manufacturer of the check valve; the company that sold the valve and the engine manufacturer it appears they have run for cover and will not return reporter's phone calls.
Original NASA ASRS Text
Title: A C210 TURBOCHARGER NEW CHK VALVE WAS INSTALLED AND THE ENG RUN. THE CHK VALVE WAS ASSEMBLED INCORRECTLY AND BLOCKED OIL TO THE TURBOCHARGER DAMAGING THE UNIT.
Narrative: ON OR ABOUT JUN/WED/05 IT WAS DISCOVERED THAT A VALID NEW PART; A TURBOCHARGER CHK VALVE; MADE BY MANUFACTURER X FOR MANUFACTURER Y AND ORDERED FROM MANUFACTURER Z PARTS; WAS MANUFACTURED INCORRECTLY. THE VALVE WAS ASSEMBLED 'BACKWARDS' AT THE MANUFACTURER. THERE IS NO 'SHOP' PROC TO CHK THE VALVE PRIOR TO INSTALLATION. ON GND RUN-UP; NO OIL FLOWED TO THE TURBOCHARGER; WHICH DAMAGED SAME AND THE TURBOCHARGER IS OUT FOR OVERHAUL. FAA NOTIFIED. ACFT WAS NOT FLOWN. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THIS CHK VALVE WAS BRAND NEW WITH THE REQUIRED SVCABLE TAG AND WAS INSTALLED ON THE TURBOCHARGER. WHEN THE ENG WAS OPERATED; THE TURBOCHARGER SEIZED FROM LACK OF OIL FLOW. THE CHK VALVE WAS FOUND ASSEMBLED INCORRECTLY AND BLOCKED THE OIL FROM LUBRICATING THE TURBOCHARGER. THE PART WAS TURNED OVER TO THE LCL FSDO AND IT WAS ESTABLISHED THE VALVE WAS ASSEMBLED INCORRECTLY. ON CONTACTING THE MANUFACTURER OF THE CHK VALVE; THE COMPANY THAT SOLD THE VALVE AND THE ENG MANUFACTURER IT APPEARS THEY HAVE RUN FOR COVER AND WILL NOT RETURN RPTR'S PHONE CALLS.
Data retrieved from NASA's ASRS site as of January 2009 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.